Final answer:
The priority finding for the nurse to report to the provider in this case is bleeding at the surgical site.
Step-by-step explanation:
The priority finding for the nurse to report to the provider in this case is Bleeding at the surgical site. Postoperative bleeding can be a serious complication that requires immediate attention to prevent further complications. The nurse should notify the provider so that appropriate interventions can be initiated.
While the other options may also require intervention, bleeding is the most immediate concern as it can lead to hemodynamic instability and compromise the client's airway. Decreased oxygen saturation, urinary retention, and increased pain level are also important to address, but they may not be as urgent as bleeding.